Can I avoid being prompted to sign in to every single Stack Exchange site, and having to type and save passwords multiply in the browser? The same login/password seems to work. Is there a Stack Exchange-wide login option, other then Google and Facebook? I've seen an official-looking page about global auto-login, but obviously it's not happening (using Firefox).
I do have Firefox / Privacy & Security / Enhanced Tracking Protection / Strict, which warns about "Cross-site tracking cookies". I also delete cookies on every browser exit. Most of the time, when I try to Ask, I'm being prompted to login (in the same session, for every site). But not every time.
Remove the cookies or block them, and you lose this nice feature.
- That's not true, see: i.sstatic.net/ZR0iJ.jpg